Improvement in bronzing-machines



5 Sheets-Sheet 1. L. POIRIERm I BRONZING-MACHINES.

No. 194,261 Patented Aug. 14,1877. A

P T NT OFFICE.-

:LAURENT POIRIER, or" PARIS, FRANon.

IMPROVEMENT m BRONQZING-MACHINES.

Specification forming part of Letters Patent No. 194,261.

February 14, 1877 dated August 14, 1877; application filed patented in France, October 17, 1874, for fifteen years.

To all whom it may concern:

Be it known that l, LAURENT Pomrna, of Paris, France, engineer, have invented Improvements in the Construction ofBronzing Apparatus, or machines forapplying any kind of colors, in a state of powder, to sheets of pa; per, cloth, &c.; and I do hereby declare that the following is a full, clear, and exact descriptionof the same, reference, being had to the annexed sheets .of drawing, making a part of the same. A I

My invention relates to improvemen tsin machinesused for bronzing-or applying any kind of colors, in a state of powder, .to sheets of; paper, sheets of metal, fabrics, due-that is to say to apparatus for applying colors, in a-f state of powder, to any kind of sheets. printed l by any mode of inking, by means of mordanti varnish, as, for instance, in lithography, copper plate printing, typography, &c. l My improved. machine is represented in ac- T companying drawings.

Figure 1 shows aside view of the machine, Fig.2 represents a view of the other side of l Fig. 3 shows a central longitudinal thesame. vertical section of the same. an elevation and a plan view, as well as partly i the cleaning-glazing cylinders constructedaccording to my improvements; and Figs. 5 and 6 showa front view and a profile oi'outside line of the peculiar mecha ism eifectuating,i automatically, the stoppage of the drum. Throughout all thesefigures the same letters and numbers or ciphers refer to like parts. I a mare bearers forming the frame of the maf chine (2, drivingshaft of the same; 0, driving pulley; d, flywheel. A The driving-shaft may, if required, be actuated by hand by means of the handle or crank e, fixedon the fly-wheel d. Y Y i v f is a drum or cylinder, carrying along the sheet to be powdered. ,This drum is mounted. on the shaft 9, pivoted on the supports forming part of the frame. This drum is driven by the main shaft 9 by means of; a straight pinion, h, fixed on the shaft 1), and gearing into the toothed wheel '5, mountedyon the shaft of the drum. [is a longitudinalnotch formed on the drum, for the catching of the sheet by a tong or dog, It, attached internally to the said Fig. 4 represents 1 i turn the trough drum, and actuated at the required moment by a cam, k by means of the lever W, or any other convenient mechanism.

l is a'cable, serving for margining or laying.

the sheets.

m is the receiving-table.

n is the bronzing or powdering cylinder, covered with velvet, flannel, &c. It turns, by its shaft 0, in bearings mounted on" spiral springs and placed in the frame. Its rotary motion is imparted. by means of a'pulley, 12, mounted on the shaft q, P y, chain, it, and the 'toothed'wheel u, mountedon the extremity of the shaft oof the powderingcylinder. V

On the other extremity of the shaft 0 is fixed a toothed wheel, a, transmitting its move ment to a pinion, 0, dependent on the shaft 0, on which is mounted the friction bronzingcylinder n, the movement of which is thrice as rapid as that of the bronzing-cylinder jn. The friction cylinder completes the bronzing, and gives the bronzed surface the polish and brilliancy.

a o is the double trough containing the bronze or other powder. This trough may vertically rise or descend in a frame, as. The this trough is obtained the shaft g,

and actuating an articulatedyel bowlever, z,

oscillating at 1. This lever actuates another lever, 2, provided' with counterpoise .3, fixed to one end turn on the frame,- and consequently receives a rotary movement, or partly an intermittent and alternate rotary movement. its lengthtwo, three,

sponding levers 6, which lift or lower in their v cause the trough to .ders at the specified.

a is a rod attached to the lever 2. through a notch provided in the board or small table b, hinged at c on thetable Z. This rod a thus gives a downward movement to the said table 6 when the sheet has been caught by the tong k.

feed the powdering-cylinproper moment, as hereinabove It passes The dotted lines in Fig. 3 show the lowered y of the drum, a strap, a toothed wheel, 8, an endless motion of from a cam, 31, fixed on of a shatt,4,which may It admits on' oragreater numherof .cams or snugs, 5, raisingorlowering correin the frame w, so as to position occupied by the small table or board in order to permit the sheet to be carried along without friction.

are fixed on bars 14, by means of two or more screws, 15, and these bars receive their continuous motion, to and fro, from a cam, 16, mounted on the driving-shaft, and into the groove of which passes a friction-roller, 17, fixed on an extremity of the arms of the said bars. By means of the screws 15 the brushes 13 may be approached to or removed from the cleaning-glazing cylinders 10 11', in order to regulate the friction of these brushes on the,

cylinders. r

The rotary movements of the brush 8 and of the cleaning-glazing cylinders 10 11 are independent of one another. To this effect a pulley, 18, is provided on the main shaft, which pulley, by means of a transmissionstrap, 19, imparts a rotary movement to another pulley, 20, fixed on the lower shaft 21, and on this shaft is mounted'a drum, which, by means of straps 22, and of the pulleys d fixed on one extremity of the shafts of the brush 8, and of the cleaning-glazing cylinders 10 11, gives to each of these organs a rotary movement. 1

23 representsa box or casin g provided between the two bearers forming the frame a.

' This casing include the double trough, the

cleaning-brush, and one of the cleaning-glazing cylinders.

24is a drawer fitting into the casing 23, to gather the powder swept away by the cleaning-brush and by one of the cleaning-glazing cylinders.

'25 is a small drawer, receiving the powder of the cleanin g-glazing cylinder 11.

2 6 27 are strips of india-rubber, leather, or any other flexible matter, pressing on the drum f, leaving only the exactly necessary space for the passage of the sheet, and completing thus the hermetical shutting of the box or casing, in order to prevent the powderdust fromescaping.

The automatical stopping of the drum for giving the sheet the required space of time for being caught by the tong k is obtained by the following arrangement:

On the main shaft of the machine is mounted a conic pinion, 28, gearing into another conic pinion or worm, 29, fixed on the extremity of a shaft, 30, which turns in a socket, 31, fixed to the frame. ()n the other extremity of this shaft is fixed a cam, 32, Figs. 4 and 5, intowhich cam a button, 33, attached laterally to the drum, is to pass at a given moment, and on the driving toothed wheel of the drum is a space, 34, without teeth.

The whole being arranged in this manner, the stoppage and the starting are effectuated in the following manner: At the moment the notch of the drum passes in front of the layer or lifter-table.-in other words, at the moment asheet is to be taken by the tong-the toothed wheel 73 is mounted on the shaft of the drum, so that'the untoothed space 34 has come in front of the pinion h. The rotary movement, therefore, is no more transmitted to the drum, and at this moment also the button 33 of the said drum has passed into the groove of the cam 32. Now, this cam being animated by a continual rotary movement, it maintains during a revolution the button 33, and causes it at the end of this revolution to slip out, thus causing in the same time the wheel '5 to gear again into the pinion h,'in order that the drum may resume its rotary movement in the same direction. Consequently, during the time required for the cam 32 to accomplish a revolution, the sheet is introduced into the notch of thedrum and caught by the clasp or tong.

For continuous stuffs and papers-as, for in.- stance, paper-hangings-the tong It will be driven by hand, and on the rear of the machine will be placed a drum, serving to wind up the paper. This drum receives its movement by straps, gearing, 85c.

I claim- I 1. The combination, with the movable trough 1;, of the levers 6, cam-shaft 4 5,lever 3, coun terpoise-lever 2, cam y, the bronzing-rollers mounted in said trough, and the cylinder or drum, as shown and described, for applying the bronze-powder to the sheet intermittently, as specified.

2. Thecombination of conic pinions 28 29, shaft 31, having cam 32, button 33, attached to the drum having a toothless space, 34, gear a, and pinion h, all as shown and described, for stopping the drum automatically, as set forth. 7 I

3. The lifter-table and drum lever 2, arm a, and cam y, the parts being so arranged that the table is lowered when the sheet has been caught by the tong To, all combined as shown and described. I

4. The combination, with the cylinders 10 11, of the longitudinally-reciprocating brushes 13 and grooved cam 16, as shown and described, for the purpose specified.

LAURENT POIRIER. Witnesses: r

RoB'r. M. HOOPER, J EAN BAPTISTE HOLLAND. 

